UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2222:2 index 128 is out of range for type 's64 [128]' CPU: 1 PID: 1660 Comm: syz-executor.5 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283 dbAllocBits+0x988/0x9c0 fs/jfs/jfs_dmap.c:2222 dbAllocDmap fs/jfs/jfs_dmap.c:1999 [inline] dbAllocNear+0x26a/0x390 fs/jfs/jfs_dmap.c:1228 dbAlloc+0xa12/0xc90 fs/jfs/jfs_dmap.c:813 extBalloc fs/jfs/jfs_extent.c:321 [inline] extAlloc+0x4b9/0xff0 fs/jfs/jfs_extent.c:122 jfs_get_block+0x342/0xce0 fs/jfs/inode.c:248 __block_write_begin_int+0x54c/0x1a80 fs/buffer.c:1991 __block_write_begin fs/buffer.c:2041 [inline] block_write_begin+0x93/0x1e0 fs/buffer.c:2102 jfs_write_begin+0x2d/0x60 fs/jfs/inode.c:304 generic_perform_write+0x2e4/0x5e0 mm/filemap.c:3753 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3881 generic_file_write_iter+0xab/0x310 mm/filemap.c:3913 __kernel_write_iter+0x2f6/0x740 fs/read_write.c:517 dump_emit_page+0xa32/0xc50 fs/coredump.c:857 dump_user_range+0x5b/0xf0 fs/coredump.c:908 elf_core_dump+0x396b/0x4120 fs/binfmt_elf.c:2311 do_coredump+0x17eb/0x2800 fs/coredump.c:755 get_signal+0x1431/0x17b0 kernel/signal.c:2844 arch_do_signal_or_restart+0x7b/0x730 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x74/0x150 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6fa423d707 Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b RSP: 002b:00007f6fa4f57f00 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffe5 RBX: 0000000000000359 RCX: 00007f6fa423d707 RDX: 0000000000000020 RSI: 0000000020012360 RDI: 0000000000000007 RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000 R10: 14d435fcc5771313 R11: 0000000000000293 R12: 0000000000000007 R13: 0000000020000530 R14: 0000000000000022 R15: 00007f6fa42d5a20 ================================================================================